JCB's construction equipment may be slow, but its Dieselmax racer fulfilled boss Sir Anthony's dreams of speed. Anthony wanted to make a statement regarding the extreme performance of his hardware. That desire led to the Dieselmax project, which led to yesterday's FIA-observed run on the Bonneville Salt Flats by commander Andy Green, who set the international speed record for a diesel-powered car of 328.767. It shattered the existing record, allegedly set by trucker BJ McKay, who according to TV viewers in 1979, gave Sheriff Lobo quite a run somewhere in rural Georgia. Ok, ok. The previous record was actually set at Bonneville by the Thermo King Streamliner — piloted by Virgil W Snyder — in 1973 (235.756 mph).